| Official Name: | Heldalsmo |
| Settlement Type: | Village |
| Pushpin Map: | Agder#Norway |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location of the village |
| Subdivision Type: | Country |
| Subdivision Name: | Norway |
| Subdivision Name1: | Southern Norway |
| Subdivision Name2: | Agder |
| Subdivision Type3: | District |
| Subdivision Name3: | Østre Agder |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Froland |
| Utc Offset1: | +01:00 |
| Utc Offset1 Dst: | +02:00 |
| Postal Code Type: | Post Code |
| Postal Code: | 4820 Froland |
| Coordinates: | 58.6281°N 8.5236°W |
| Elevation M: | 218 |
| Elevation Footnotes: | [1] |
Heldalsmo is a village in Froland municipality in Agder county, Norway. The village is located along the Sørlandsbanen railway line, about southwest of the lake Nelaug. The village is only accessible by rail from Hynnekleiv to the west or Nelaug to the east, or by the Norwegian County Road 152 which runs to the south through Jomås and on to Blakstad.